Now, to a battle between moms. It does take the ce. It's because of the photos popping up, everyone on pinterest, facebook. Abc's bianna golodryga has the story. Faster. Reporter: This woman has taken making birthday cakes for her three boys to a tier above the rest. You remember the first cake you ever baked? My first cake was an elmo cake. Reporter: From elmo, jennifer moved on to cookie monster, a subway train and lightning McQUEEN. My husband calls me cakezilla. Reporter: Cakes like jennifer's and other mommy activity is popping up. The posts inspire some but intimidate, even depress, other moms. Leslie is a co-founder of big city moms, one of the nation's largest support groups for new mothers. She says when moms are especially creative and crafting everything from costumes to valentines, social media enables everyone to see their handiwork. Like that mom competition. Oh, well, you know, I saw a cake on pinterest and I'm going to make it. And the next birthday party, i saw this one. I'm going to one-up you. Reporter: Moms we spoke to said pinterest pressure can drive moms crazy. It can make some women feel like they are not enough. A lot of people do put pressure on themselves to see this new mom as a superhero. Reporter: California mom jenna anderson grew so frustrated not being able to re-create the perfect posts, that she launched pinterest fail, a site devoted to inperfection. We have to gather together and say my life isn't perfect. And I'm perfectly happy with that. Reporter: As for jennifer, she doesn't want her cakes to make other moms feel bad. They're intended to make her kids happy. You like your mom's cakes? Yeah. Reporter: You think baking your cakes from scratch at home as opposed to buying them at the store makes you a better mom? Absolutely not. Just something I like to do, the baking. To each their own. Reporter: For "good morning america," bianna golodryga, abc news, new york.

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